SelecTone® Model 300 is a lightweight and compact, solid-state amplified speaker designed to amplify a pre-selected tone over existing ambient noises. The speaker cone and projector are made of spun aluminum. The internal amplifier circuitry and tone module are contained in a housing of die-cast aluminum. Dust- and moisture-proof gasketing provides protection from the elements. All external components are sealed with powder-coat paint.
SelecTone Amplified Speakers are used individually or as part of a plant-wide emergency notification system. Model UTM (Universal Tone Module) is used to generate one of 32 tones and is plugged into a single SelecTone Amplified Speaker for stand-alone use or into a SelecTone Command Unit for plant-wide signaling.
Model 300 speaker/amplifiers are ideally suited for full output tone signaling where voice paging is not a requirement. Typical applications include emergency warning, start and dismissal, general alarm, smelters and cranes.


Voltage 250VDC
Mount Surface
Operating Current 0.072 Amps at 250VDC
Operating Temperature Minimum -31 °F
Operating Temperature Maximum 151 °F
Decibel Output 110 @ 10 feet
120 @ 1 Meter
Enclosure Rating Type 3R
Height 12.400 in
Width 7.900 in
Depth 8.500 in
Net Weight 5 lb
Shipping Weight 6.10 lb


Product Literature
Product Manuals

Ordering Information

Model Types
Model Description UPC
300-250 SelecTone audible signal, 250VDC 782979200505
UTM Universal tone module 782979202172
AM25CK Connector card, 25vrms 782979600855
AM70CK Connector card, 70vrms 782979600862
300CK Connector kit 782979391203
T-300CK 2.7 Vrms, 1 Vrms
E-300CK 1 Vrms, 1 Vrms
Replacement Parts
Description Part Number UPC
PCBA, 300-250 Selectone K2001903B 782979125556
15W Diaphragm, Voice Coil, Butterfly Assembly K8593035A 782979121138
15W Speaker Assembly, Gray K8593082A 782979122531